Deleting specific content of XML file - c++

Question

In my xml file i have a node whose subchilder have 2 attributes, i have to delete 1 whole subchild while considering only 1 attribute. I have given an example below
XML file:
<UMG>
<ABC Name="ABC" Value="1"></ABC>
<ABC Name="ABC1" Value="2"></ABC>
<ABC Name="ABC2" Value="3"></ABC>
<ABC Name="ABC3" Value="4"></ABC>
<ABC Name="ABC4" Value="5"></ABC>
</UMG>
I have to delete the whole subchild with only "Name" attribute, because Value can be changed.
My code until now:
void::MainWindow::XML()
{
QString path = ui->lineEdit_7->text();
qDebug()<<path;
if(!file.exists() )
{
qDebug() << "Check your file";
}
QDomDocument dom;
dom.setContent(&file);
QDomNodeList nodes = dom.elementsByTagName("ABC");
QDomNodeList loc_childNodes = nodes.at(0).childNodes();
for(int i=0; i<loc_childNodes.count(); i++)
{
QDomNode node = loc_childNodes.at(i);
qDebug() << node.attributes().namedItem("Name").nodeValue(); // I get all Name attributes.
last qDebug gives me all "Name" attributes. I am stuck at deleting the subchild with using this information.
Edit:
<NEW>
<child>ABC<child>
<child1>ABC1<child1>
<Child3>ABC3<child3>
<NEW>
EDIT2:
<MAIN>
<SUB Name = "ABC" Value = "1"/>
<SUB Name = "ABC1" Value = "0"/>
<SUB Name = "ABC2" Value = "3"/>
<Header Name = "Abc" value = "9"/>
<SUB Name = "ABC7" Value = "3"/>
<Header Name = "Abc5" value = "9"/>
<SUB Name = "ABC3" Value = "3"/>
<Header Name = "Abc0" value = "9"/>
</MAIN>
I want to delete only "SUB" attributes child.
EXPECTED Result:
<MAIN>
<Header Name = "Abc" value = "9"/>
<Header Name = "Abc5" value = "9"/>
<Header Name = "Abc0" value = "9"/>
</MAIN>
EDit3:
qDebug()<<manualoutput_scr;
QString path = "File"
QFile inFile(path );
if( !inFile.open( QIODevice::ReadOnly | QIODevice::Text ) )
{
qDebug( "Failed to open file for reading." );
}
QDomDocument dom;
if( !dom.setContent( &inFile ) )
{
qDebug( "Failed to parse the file into a DOM tree." );
}
QDomElement docElem = dom.documentElement();
QDomNodeList nodes = docElem.elementsByTagName("MAIN");
QDomNodeList loc_childNodes = nodes.at(0).childNodes();
for(int i=0; i<loc_childNodes.count(); i++)
{
QDomNode node = loc_childNodes.at(i);
if( node.nodeName().compare("SUB") == 0 ) {
QDomNode parentNode = node.parentNode();
parentNode.removeChild(node);
}
}
QFile outFile( path);
if( !outFile.open( QIODevice::WriteOnly | QIODevice::Text ) )
{
qDebug( "Failed to open file for writing." );
}
QTextStream stream( &outFile );
stream << dom.toString();
outFile.close();

Answer 1

QDomNode has method removeChild may be it help?
From doc
QDomNode QDomNode::removeChild(const QDomNode & oldChild)
Removes oldChild from the list of children. oldChild must be a direct
child of this node. Returns a new reference to oldChild on success or
a null node on failure.
Addition Your code may looks something like follow
if( node.attributes().namedItem("Name").nodeValue().compare("ABC3") == 0 ) {
QDomNode parentNode = node.parentNode();
parentNode.removeChild(node);
}
Addition to Edit 2
if( node.nodeName().compare("SUB") == 0 ) {
QDomNode parentNode = node.parentNode();
parentNode.removeChild(node);
}
Update To Edit 3. Replace the lines
QDomElement docElem = dom.documentElement();
QDomNodeList nodes = docElem.elementsByTagName("MAIN");
with
QDomNodeList nodes = dom.elementsByTagName("MAIN");
and after parent.removeChild(node) add i-=1, because a count of elements is decreased.
And don't forget to close the file ("File") inFile.close() before to call outFile.open()